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https://github.com/ruby/ruby.git
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fbacf5faad
This was not requested :) but actually easier than the previous so I just did it anyway. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61787 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
110 lines
2.5 KiB
Ruby
110 lines
2.5 KiB
Ruby
#! /your/favourite/path/to/ruby
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# -*- mode: ruby; coding: utf-8; indent-tabs-mode: nil; ruby-indent-level: 2 -*-
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# -*- frozen_string_literal: true; -*-
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# -*- warn_indent: true; -*-
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#
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# Copyright (c) 2017 Urabe, Shyouhei. All rights reserved.
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#
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# This file is a part of the programming language Ruby. Permission is hereby
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# granted, to either redistribute and/or modify this file, provided that the
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# conditions mentioned in the file COPYING are met. Consult the file for
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# details.
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require 'pathname'
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require 'erb'
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require_relative 'c_escape'
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class RubyVM::Dumper
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include RubyVM::CEscape
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private
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def new_binding
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# This `eval 'binding'` does not return the current binding
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# but creates one on top of it.
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return eval 'binding'
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end
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def new_erb spec
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path = Pathname.new(__FILE__).realpath.dirname
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path += '../views'
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path += spec
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src = path.read mode: 'rt:utf-8:utf-8'
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rescue Errno::ENOENT
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raise "don't know how to generate #{path}"
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else
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erb = ERB.new src, nil, '%-'
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erb.filename = path.realpath.to_path
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return erb
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end
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def finderb spec
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return @erb.fetch spec do |k|
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erb = new_erb k
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@erb[k] = erb
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end
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end
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def replace_pragma_line str, lineno
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if str == "#pragma RubyVM reset source\n" then
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return "#line #{lineno + 2} #{@file}\n"
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else
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return str
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end
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end
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def local_variable_set bnd, var, val
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eval '__locals__ ||= {}', bnd
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locals = eval '__locals__', bnd
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locals[var] = val
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eval "#{var} = __locals__[:#{var}]", bnd
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test = eval "#{var}", bnd
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raise unless test == val
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end
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public
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def do_render source, locals
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erb = finderb source
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bnd = @empty.dup
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locals.each_pair do |k, v|
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local_variable_set bnd, k, v
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end
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return erb.result bnd
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end
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def replace_pragma str
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return str \
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. each_line \
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. with_index \
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. map {|i, j| replace_pragma_line i, j } \
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. join
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end
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def initialize path
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@erb = {}
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@empty = new_binding
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dst = Pathname.new Dir.getwd
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dst += path
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@file = cstr dst.realdirpath.to_path
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end
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def render partial, opts = { :locals => {} }
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return do_render "_#{partial}.erb", opts[:locals]
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end
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def generate template
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str = do_render "#{template}.erb", {}
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return replace_pragma str
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end
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private
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# view helpers
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alias cstr rstring2cstr
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alias comm commentify
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def render_c_expr expr
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render 'c_expr', locals: { expr: expr, }
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end
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end
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